CVE-2026-14631

描述

### Impact An unauthenticated peer that can reach the `webpack-dev-server` process can terminate it by sending either a normal HTTP request with a malformed `Host` header, or a WebSocket upgrade to the default `/ws` endpoint with a malformed `Origin` header. The malformed header triggers an uncaught exception in the host-validation path and crashes the dev server process. ### Patches Fixed in `webpack-dev-server` 5.2.6 by treating malformed `Host` and `Origin` header values as invalid rather than throwing (see [PR #5699](https://github.com/webpack/webpack-dev-server/pull/5699)). ### Workarounds Keep the dev server bound to `localhost` (the default) and do not expose it to untrusted networks.

如何修補 CVE-2026-14631

要修補 CVE-2026-14631,請將受影響套件升級到下列已修補版本。

• —升級至 5.2.6 或更新版本

CVE-2026-14631 正在被利用嗎?

低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 5.2.6

CVSS 分數

參考連結(6)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-14631
• PATCHgithub.com/webpack/webpack-dev-server
• WEBcna.openjsf.org/security-advisories.html
• WEBgithub.com/webpack/webpack-dev-server/commit/f21ed0f44aceb6132abb591ee8b60d770b6e489f